Measurement of the Transverse Momenta of Partons, and of Jet Fragmentation as a Function Of. Sqrt. S in P-p Collisions

Measurement of the Transverse Momenta of Partons, and of Jet Fragmentation as a Function Of. Sqrt. S in P-p Collisions
Author:
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Total Pages:
Release: 1980
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ISBN:

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A large solid angle apparatus consisting of a superconducting solenoid magnet, cylindrical drift chambers and two arrays of lead-glass counters was used to examine particles associated with a high transverse momentum trigger in p-p collisions with three .sqrt. s values at the CERN ISR. The trigger was given by energy deposition in lead-glass arrays centered at 90°. The trigger transverse momentum range covered was 3

Measurement of the Transverse Momenta of Partons and of Jet Fragmentation as a Function Of. Sqrt. S in P-p Collisions

Measurement of the Transverse Momenta of Partons and of Jet Fragmentation as a Function Of. Sqrt. S in P-p Collisions
Author:
Publisher:
Total Pages:
Release: 1980
Genre:
ISBN:

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A large solid-angle apparatus consisting of a superconducting solenoid magnet, cylindrical drift chambers, and two arrays of lead-glass counters was used to examine particles associated with a high-transverse momentum trigger in p-p collisions with three .sqrt.s values at the CERN ISR. The trigger was given by energy deposition in lead-glass arrays centered at 90°. The trigger transverse momentum range covered was 3

Fragmentation of Jets Produced in Proton-Antiproton Collisions at $\sqrt{s}

Fragmentation of Jets Produced in Proton-Antiproton Collisions at $\sqrt{s}
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Publisher:
Total Pages: 140
Release: 2007
Genre:
ISBN:

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We present the first measurement of two-particle momentum correlations in jets produced in p$\bar{p}$ collisions at center of mass energy of 1.96 TeV. A comparison of the experimental data to theoretical predictions obtained for partons within the framework of resummed perturbative QCD (Next-to-Leading Log Approximation) shows that the predicted parton momentum correlations survive the hadronization stage of jet fragmentation and are present at the hadron level. We also present the measurement of the intrinsic transverse momenta of particles with respect to jet axis (kT). Experimental data is compared to the theoretical predictions obtained for partons within the framework of Modified Leading Log Approximation and Next-to-Modified Leading Log Approximation, and shows good agreement in the range of validity of the theoretical predictions. The results of both measurements indicate that the perturbative stage of the jet formation must be dominant and give further support to the hypothesis of Local Parton-Hadron Duality.

Jet Fragmentation Transverse Momentum Measurements from Di-hadron Correlations in √s

Jet Fragmentation Transverse Momentum Measurements from Di-hadron Correlations in √s
Author: Shreyasi Acharya
Publisher:
Total Pages: 0
Release: 2019
Genre:
ISBN:

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The transverse structure of jets was studied via jet fragmentation transverse momentum (jT) distributions, obtained using two-particle correlations in proton-proton and proton-lead collisions, measured with the ALICE experiment at the LHC. The highest transverse momentum particle in each event is used as the trigger particle and the region 3

Measurement of Transverse Momentum Relative to Dijet Systems in PbPb and $pp$ Collisions at $\sqrt{s_{NN}}

Measurement of Transverse Momentum Relative to Dijet Systems in PbPb and $pp$ Collisions at $\sqrt{s_{NN}}
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Total Pages: 48
Release: 2015
Genre:
ISBN:

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An analysis of dijet events in PbPb and pp collisions is performed to explore the properties of energy loss by partons traveling in a quark-gluon plasma. Data are collected at a nucleon-nucleon center-of-mass energy of 2.76 TeV at the LHC. The distribution of transverse momentum (pT) surrounding dijet systems is measured by selecting charged particles in different ranges of pT and at different angular cones of pseudorapidity and azimuth. The measurement is performed as a function of centrality of the PbPb collisions, the pT asymmetry of the jets in the dijet pair, and the distance parameter R used in the anti-kT jet clustering algorithm. In events with unbalanced dijets, PbPb collisions show an enhanced multiplicity in the hemisphere of the subleading jet, with the pT imbalance compensated by an excess of low-pT particles at large angles from the jet axes.

The Black Book of Quantum Chromodynamics

The Black Book of Quantum Chromodynamics
Author: John Campbell
Publisher: Oxford University Press
Total Pages: 760
Release: 2018
Genre: Science
ISBN: 0199652740

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This title provides an in-depth introduction to the particle physics of current and future experiments at particle accelerators. The text provides the reader with an overview of practically all aspects of the strong interaction necessary to understand and appreciate modern particle phenomenology at the energy frontier.

Government Reports Annual Index

Government Reports Annual Index
Author:
Publisher:
Total Pages: 1132
Release: 1986
Genre: Government reports announcements & index
ISBN:

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Study of Double Parton Scattering Using Four-Jet Scenarios

Study of Double Parton Scattering Using Four-Jet Scenarios
Author: Paolo Gunnellini
Publisher: Springer
Total Pages: 290
Release: 2015-08-24
Genre: Science
ISBN: 3319222139

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This thesis addresses in a very new and elegant way several measurements and the extraction of so-called double parton scattering. The new and elegant way lies in the combination of measurements and a very smart extraction of double parton scattering results, which is easy to apply and overcomes many of the technical difficulties of older methods. Many new phenomena in particle physics can be observed when particles are collided at the highest energies; one of the highlights in recent years was the discovery of the Higgs boson at the Large Hadron Collider at CERN. Understanding the production mechanism of the Higgs boson at the LHC requires detailed knowledge of the physics of proton-proton collisions. When the density of partons in the protons becomes large, there is a non-negligible probability that more than one parton participates in the interaction and the so-called double parton scattering becomes important. In some cases very particular final state signatures can be observed, which can be regarded as an indication of such double partonic scattering and where the different interactions can be separated. Such multiple partonic interactions play an important role when precise predictions from known processes are required.